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Solving Decimal Equations Lesson 3-9

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Examples 1. g – 3.1 = k = 8.1

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Examples 3. m /5 = = v

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Felipe has earned $42.50 by mowing lawns for his neighbors. He wants to buy inline skates that cost $ Write and solve an equation to find out how much more money Felipe must earn to buy the skates.

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Equation$ m = $69.95 Solve for Equation $ m = $ $ $42.50 m= $24.75 m= $24.75 Felipe needs $27.45 more to buy the inline skates. Use inverse operation to get the variable alone on one side of the equation.

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Problem Solving The area of the floor in Jonah’s bedroom is 28 meters. If the length is 3.5 meters, what is the width of the bedroom? Area = length x width

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Problem Solving Jonah is carpeting his bedroom. The carpet cost $22.50 per square meter. What is the total cost to carpet his bedroom? Hint: total cost = area x cost of the carpet per square meter

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